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Ancient Dna: Methods And Protocols -

Synthetic DNA "adapters" are attached to the ends of the fragments, allowing them to bind to the sequencing platform.

All work must be done in a dedicated "Clean Lab" with HEPA filtration, positive air pressure, and UV sterilization. Researchers wear full-body suits to prevent shedding their own DNA onto the samples.

Success begins with choosing the right material. The (part of the skull) and tooth cementum are the "gold standards" because their high density protects DNA from environmental leaching.

Proteinase K is added to break down cellular proteins and nucleases.

Once extracted, the DNA must be prepared for Next-Generation Sequencing (NGS).

If the sample has low endogenous DNA (e.g., 99% of the DNA is from soil bacteria), researchers use "baits"—RNA probes that match the target genome—to "fish out" the human or animal DNA of interest. 5. Bioinformatic Authentication The final step is proving the DNA is actually ancient.

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Synthetic DNA "adapters" are attached to the ends of the fragments, allowing them to bind to the sequencing platform.

All work must be done in a dedicated "Clean Lab" with HEPA filtration, positive air pressure, and UV sterilization. Researchers wear full-body suits to prevent shedding their own DNA onto the samples. Ancient DNA: Methods and Protocols

Success begins with choosing the right material. The (part of the skull) and tooth cementum are the "gold standards" because their high density protects DNA from environmental leaching.

Proteinase K is added to break down cellular proteins and nucleases.

Once extracted, the DNA must be prepared for Next-Generation Sequencing (NGS). Synthetic DNA "adapters" are attached to the ends

If the sample has low endogenous DNA (e.g., 99% of the DNA is from soil bacteria), researchers use "baits"—RNA probes that match the target genome—to "fish out" the human or animal DNA of interest. 5. Bioinformatic Authentication The final step is proving the DNA is actually ancient.

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